My few words about side-chain compression and good arrangement of kick and bass. And then it all depends on the selected sound. Use HPF, use notch and most importantly use a good monitoring. There are no rules, all for a good sound.

I use shelving a lot for bass. HPF more for vocals and guitars where there's significant amount of bass content that's not in the range of the instrument.

Excellent discussion guys and some very good ideas.  Based on this, I will not feel bad about an HPF at 80-100 hz if it sounds good, although I am going to A/B this with a low-freq shelf as Craig suggested and see which works better in the context.
 
 
 
 

Anderton
I use shelving a lot for bass. HPF more for vocals and guitars where there's significant amount of bass content that's not in the range of the instrument.

I do the same. It's really great having the new X3 Quad Curve eq. It makes shelving, hpf and lpf a snap.

You may consider listening to the mix on a system with a sub.  Many subs have a 100Hz crossover, including home theater subs, and if you have smaller monitors, you may miss out on a lot of lower activity going on.  Leave room for your kick (if the kick is important to you), try side-chaining your kick & bass, or adjust the hpf slope to see what goes on. 

Maarkr
You may consider listening to the mix on a system with a sub.

Or a good pair of studio headphones. I'm constantly amazed at the bass in my ATH-M50's. I have a cheap pair of Sony cans for the gym and there's a song in my gym playlist that for ages I thought had no bass line. Listened to it on my M50's last night and to my surprise it actually has a very cool sub bass line which throws the song in a whole new light.